K2500 dying at stops

I'm getting ready to tow my race car from MN to MI thursday and my 97 K2500 6.5 diesel is starting to **** on me. This just started last night - occasionally when I bring the truck to a stop it will just shut off. No drama, it's just like the key was turned off. It fires back up right away. I have felt it hiccup while driving a few times as well. A quick search indicates this may be the PMD/FSD - what are people's thought's on this? I don't have time to do a detailed search since I'm at work and rushed for time to fix this.